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Re: Patents (was Re: google reads your mail)

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From	Bill Sloman <bill.sloman@ieee.org>
Newsgroups	sci.electronics.design, comp.lang.python
Subject	Re: Patents (was Re: google reads your mail)
Date	Sun, 20 Sep 2026 02:25:11 +1000
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Cross-posted to 2 groups.

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On 19/09/2026 8:04 am, Lawrence D’Oliveiro wrote:
> On Fri, 18 Sep 2026 15:36:33 +1000, Bill Sloman wrote:
> 
>> It didn't stop him getting an international patent on
>> counter-current continuous cooking, where you convert wood chips
>> into paper pulp by letting them fall down through a rising stream of
>> sodium hydroxide. solution. We did get international visitors. One
>> was
>>
>> https://en.wikipedia.org/wiki/Johan_Richter_(inventor)
>>
>> who'd invented the concurrent continuous digestor that my father
>> eventually modified for counter-current operation. Johan had tried
>> for some ten years to get it to work counter-current, and his
>> company (Kamyr) never paid any royalty on my father's patent, though
>> the industry adopted the process very rapidly.
> 
> But you don’t need to prove something works before getting a patent.

It's frequently helpful to have a working example. The counter-current 
continuous digestor was quite a tricky design - which is why Johan 
Richter could never get any of his versions to work - and potential 
users would set set up industrial scale trials.
'
The provisional patent I'm working on is a lot simpler, and won't need a 
working example.

> Thomas Edison put together the first working electric light-bulb. Did
> he get the patent on it? No, because that was already taken by Joseph
> Swan.

Who'd done quite a much development work as Thomas Edison.

Both inventors patented much the same invention at much the same time, 
and found it expedient to set up a joint company to exploit them.

https://en.wikipedia.org/wiki/Joseph_Swan

-- 
Bill Sloman, Sydney

Thread

Re: google reads your mail "Johann \"Myrkraverk\" Oskarsson" <johann@myrkraverk.invalid> - 2026-09-16 23:39 +0800
  Re: google reads your mail Bill Sloman <bill.sloman@ieee.org> - 2026-09-17 16:51 +1000
    Re: google reads your mail Lane W <cactus_DAC@yahoo.com> - 2026-09-17 02:43 -0600
      Re: google reads your mail Bill Sloman <bill.sloman@ieee.org> - 2026-09-17 23:34 +1000
        Re: google reads your mail Lane W <cactus_DAC@yahoo.com> - 2026-09-17 08:43 -0600
          Re: google reads your mail Bill Sloman <bill.sloman@ieee.org> - 2026-09-18 15:36 +1000
            Re: Patents (was Re: google reads your mail) Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-18 22:04 +0000
              Re: Patents (was Re: google reads your mail) Bill Sloman <bill.sloman@ieee.org> - 2026-09-20 02:25 +1000
                Re: Patents (was Re: google reads your mail) Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-19 22:03 +0000
                Re: Patents (was Re: google reads your mail) Bill Sloman <bill.sloman@ieee.org> - 2026-09-20 16:13 +1000
                Re: Patents (was Re: google reads your mail) Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-20 08:09 +0000
                Re: Patents (was Re: google reads your mail) Bill Sloman <bill.sloman@ieee.org> - 2026-09-20 18:25 +1000

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